126420534 has 32 divisors (see below), whose sum is σ = 297462240. Its totient is φ = 39661056.

The previous prime is 126420493. The next prime is 126420557. The reversal of 126420534 is 435024621.

126420534 is a `hidden beast` number, since 12 + 642 + 0 + 5 + 3 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 126420498 and 126420507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67939 + ... + 69774.

It is an arithmetic number, because the mean of its divisors is an integer number (9295695).

Almost surely, 2^126420534 is an apocalyptic number.

126420534 is an abundant number, since it is smaller than the sum of its proper divisors (171041706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126420534 is a wasteful number, since it uses less digits than its factorization.

126420534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137741 (or 137735 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 126420534 is about 11243.6886296268. The cubic root of 126420534 is about 501.8869154756.

The spelling of 126420534 in words is "one hundred twenty-six million, four hundred twenty thousand, five hundred thirty-four".